Python3.6连接Oracle数据库的方法详解

这篇文章主要介绍了Python3.6连接Oracle数据库的方法,较为详细的分析了cx_Oracle模块安装及Python3.6使用cx_Oracle模块操作Oracle数据库的具体操作步骤与相关注意事项,需要的朋友可以参考下

本文实例讲述了Python3.6连接Oracle数据库的方法。分享给大家供大家参考，具体如下：

下载cx_Oracle模块模块：

https://pypi.python.org/pypi/cx_Oracle/5.2.1#downloads

这里下载的是源码进行安装

 [root@oracle oracle]# tar xf cx_Oracle-5.2.1.tar.gz [root@oracle oracle]# cd cx_Oracle-5.2.1 [root@oracle cx_Oracle-5.2.1]# python setup.py build Traceback (most recent call last): File "setup.py", line 170, in  raise DistutilsSetupError("cannot locate an Oracle software " \ distutils.errors.DistutilsSetupError: cannot locate an Oracle software installation

报错解决办法：在root用户的.bash_profile文件中添加oracle_home的环境变量

 export ORACLE_HOME=/u01/app/product/11.2.0/dbhome_1 PATH=${ORACLE_HOME}/bin:$PATH:$HOME/bin [root@oracle cx_Oracle-5.2.1]# source /root/.bash_profile [root@oracle cx_Oracle-5.2.1]# echo ${ORACLE_HOME} /u01/app/product/11.2.0/dbhome_1

然后继续build：

 [root@oracle cx_Oracle-5.2.1]# python setup.py build running build running build_ext

后面输出信息省略

 [root@oracle cx_Oracle-5.2.1]# python setup.py install running install running bdist_egg

后面输出信息省略

按照完成之后，进行验证模块：

 >>> import cx_Oracle Traceback (most recent call last): File "", line 1, in  ImportError: libclntsh.so.11.1: cannot open shared object file: No such file or directory

解决办法：在root用户的.bash_profile文件中添加LD_LIBRARY_PATH的环境变量

 LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib:/usr/local/lib export LD_LIBRARY_PATH

 [root@oracle cx_Oracle-5.2.1]# source /root/.bash_profile [root@oracle cx_Oracle-5.2.1]# python

 Python 3.6.1 (default, Jul 13 2017, 14:31:18) [GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import cx_Oracle

 #!/usr/bin/python #coding=utf8 # import module import cx_Oracle as oracle # connect oracle database db = oracle.connect('scott/redhat@192.168.223.138:1521/oracle.test') # create cursor cursor = db.cursor() # execute sql cursor.execute('select sysdate from dual') # fetch data data = cursor.fetchone() print('Database time:%s' % data) # close cursor and oracle cursor.close() db.close()

 [oracle@oracle scripts]$ python connectoracle.py Database time:2017-08-04 10:20:39

 #!/usr/bin/python #coding=utf8 import cx_Oracle as oracle def oraclesql(cursor): fp = open(r'/home/oracle/scripts/tablespace.sql') fp_sql = fp.read() cursor.execute(fp_sql) data = cursor.fetchall() return data if __name__ == '__main__': ipaddr = "192.168.223.138" username = "system" password = "redhat" oracle_port = "1521" oracle_service = "oracle.test" try: db = oracle.connect(username+"/"+password+"@"+ipaddr+":"+oracle_port+"/"+oracle_service) # 将异常捕捉，然后e就是抛异常的具体内容 except Exception as e: print(e) else: cursor = db.cursor() data = oraclesql(cursor) for i in data: print(i) cursor.close() db.close()

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